CN1787778A - System and method for therapy and diagnosis comprising optical components for distribution of radiation - Google Patents
System and method for therapy and diagnosis comprising optical components for distribution of radiation Download PDFInfo
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Abstract
A system and method used for mutual therapy and diagnosing man body and animals, comprises: at least one first emission diagnostic radiation source, at least a second radiation source of emission therapeutic radiation, and at least a radiation conductor used for guiding radiation to the tumor position of man and animals. The non-mechanical operation mode selecting device guides the therapeutic radiation and/or diagnostic radiation to the tumor position through radiation conductor. The operation mode selecting device had better to be non-mechanical optical switch and/or optical combination device. The system can be used for mutual clearance optical motivate tumor therapy.
Description
Technical field
The present invention relates generally to be used for the treatment of and diagnose curee's system and method.More particularly, this system and method relates to oncotherapy and diagnostic system and the method that is used for human body or animal subject.More particularly, the present invention relates to the system and method for optical dynamic therapy (PDT) and/or photo-thermal therapy (PTT) and/or light power diagnosis (PDD) human body or animal upper part, wherein the electromagnetic radiation of unionized formula is introduced to the position that reacts with radiation, wherein this system comprises: the operator scheme selector that is used for radiation distribution, respectively from least one radiation source to reactive site, and/or from reactive site at least one radiation sensor, and wherein reactive site normally has the tumor locus of tumor, for example, malignant tumor.
Background technology
Field at medical approaches treatment tumor disease, people have developed the multiple physiotherapy that is used for the treatment of malignancy disease: operation, suppress cell therapy, ionizing radiation therapy (gamma-radiation or particle radiation), the brachytherapy of isotope therapy and employing radial spine is the example of General Physics therapy.Although obtain very big progress aspect treatment, tumor disease still makes people suffer very big misery, and has the mortality rate of high percentage ratio in western countries.New relatively physiotherapy, it abbreviates the photodynamic therapy of PDT usually as, provides valuable and replenish or selection scheme in the treatment field.Tumor-seeking agent is referred to as precursor or antibody usually, and by intravenous injection, oral or local mode is offerd medicine in the health.Its cumulative quantity in malignant tumor surpasses health tissues on every side usually.Then, be used to non-thermal energy red light irradiation tumor area, thereby make antibody be activated to the state of more strengthening from laser instrument.From activating the transfer of antibody oxygen molecule to the tissue, oxygen molecule translates into activated singlet from its normal triplet by energy.We know that singlet oxygen is toxic especially for organizing: cell is organized by elimination and is entered necrosis.Because antibody concentrates on tumor cell, can obtain unique selectivity, thus the health tissues around remaining.Particularly, utilize the clinical experience of hematoporphyrin derivative (HPD) and δ amino-laevulic acid (ALA) to have good effect.
Antibody also has other useful properties: when utilizing visible light or ultraviolet radiation excitation material, it produces the characteristic fluorescence signal that is displaced to longer wavelength.The endogenous fluorescence of sort signal and tissue forms obvious contrast, and it also is referred to as autofluorescence, can be used for positioning tumor and quantizes the scope that antibody absorbs in the tissue.
Limited penetrating in activating the red light radiation tissue is the significant drawback of PDT.Consequently, utilize surface irradiation only can treat thickness approximately less than the tumor of 5mm.In order to treat thicker and/or deep tumor, can utilize the PDT (IPDT) in gap.Utilize syringe needle that light guide optical fiber is inserted in the tumor, in the cavity of placing optical fiber herein.
In order to realize effective treatment, utilize several optical fiber to accept enough light dosages to guarantee all tumor cells, therefore, can obtain virose singlet.People prove, absorption and scattering nature that can the Rapid Dose Calculation tissue for example, be described the IPDT system in Swedish Patent SE 503 408, wherein 6 optical fiber are used for the treatment of and the measuring light flux, and this luminous flux penetrates at other optical fiber and arrives given optical fiber when organizing.In this manner, in all parts of tumor, can improve and calculate correct light dosage.
According to SE 503 408 disclosed contents, utilize the beam splitter system that single laser is divided into 6 different parts, this system comprises a large amount of bulky machinery and optical elements.Then, light is focused in every optical fiber of 6 different treatment optical fiber.Article one, optical fiber is used as emitter, and remaining optical fiber receives the radiation of penetrate tissue as receptor.When photo measure, utilize mechanical system swing photoelectric detector to enter the beam path that is blocked, and measure the low light level that derives from some optical fiber, these optical fiber are collected the light that shines in the tissue.
Yet this open beam path causes the light beam splitting of strong loss, and the light loss that forms consumption is greatly damaged light distribution and photo measure.In addition, optics is adjusted this system frequently, and this also is a significant drawback of clinical treatment.This system is also very huge and heavy, is difficult to make it to be made for the convenient equipment that uses of a user.
EP-A2-0280397 discloses a kind of very sterilized endoscope of minor diameter that has, and it has the center coherent fibre bundle of transmitted image to finder.Around this fibre bundle is many optical fiber.The near-end of endoscope configuration coupling device is used to aim at the optical system of fibre bundle and finder and interface with light emitting devices is provided, and can arrive checked body cavity from the light of light source along fiber-optic transfer.This device can be used for detecting cancerous cell and treats by phototherapy.Dyestuff adheres to checked tissue, and with post-exposure the excitation laser frequency under.Cancerous cell is emitting fluorescence under the characteristic fluorescence frequency.Detect this fluorescence and it is presented on the video monitor, carry out light treatment and have the optical transmission of same frequency to arrive cell by optical fiber with this fluorescence.Yet they only openly utilize the light source of single wavelength, therefore, not exchanging under the situation of light source according to manual type, can not finish a plurality of diagnosis.In addition, it is impossible exchanging between optical fiber not of the same clan, that is, all optical fiber always has identical functions (light input or light output).The coupling device of describing in EP-A2-0280397 only is used to adjust the path of light, and this light is two unit endoscopies by assembling before using.In addition, different optical fiber is used for guiding treatment light to cancer location, and direct diagnostic light is returned and passed through endoscope.Between different operator schemes, can not distribute.This solution is neither interactive treatment, tomography reflection that neither tumor.WO-A1-02074339 discloses a kind of apparatus and method of utilizing fluorescence cobalamine light power diagnosis tumor tissues.This fluorescence cobalamine is as diagnosing and prognostic markers: (a) distinguish cancerous cell and tissue and healthy cell and tissue, (b) determine to utilize the cobalamin-therapeutic bioconjugation for chemotherapy whether positive response to be arranged.Disclosed equipment comprises the video camera that is coupled to the surgical telescopic device near-end.Surgical telescopic device is to utilize non-white light tissue, and detects the diagnosis fluorescence of emission.Disclose a kind of method of utilizing two light sources, it comprises HONGGUANG (non-white light) source and white light source.White light source is used for usual manner irradiation tissue.Switch is used for the exchange between the Different Light.This switch can be that sound starts, and mechanical system starts (pedal), and optical mode starts, or the switch that starts of electronics mode.Do not describe this switch in more detail, but reflecting mirror or prism can be used for two exchanges between the light source under machinery or electromechanical means control.In addition, disclose and a kind ofly have two reality to separate the light source of outfan.In this case, the light input end in the surgical telescopic device must move between two outfans, in order that the light source of exchange irradiation tissue.This device is not suitable for treatment.Must treat according to conventional method, the surgeon removes the cancerous tissue by means of fluoroscopic examination.So this device is not suitable for interactive diagnosis and treatment.In addition, do not point out to be applicable to the switch that exchanges between different diagnosis or the treatment pattern.In addition, disclosed device only provides the diagnosis or the treatment of basic surface, can not diagnose or treat the tissue in gap.This device also is confined to existing body cavity, and its shortcoming is that the endoscope probe volume is huge with respect to single optical fiber.
EP-A2-0195375 discloses a kind of conduit that is used for the laser intravascular surgery.This device is used to detect the atherosclerotic plaque deposit, by means of detecting fluorescence as sending by comprising the exciting light reaction of fibre-optic catheter.Identical optical fiber can be used for sending exciting light and receives fluorescence to speckle and from this speckle.When detecting speckle, can remove speckle by sending high-octane light, the optical fiber of this optical transmission by choosing in the conduit.Yet this system is not suitable for diagnosis or treatment tumor.Choosing of illuminated optical fiber is to utilize machinery purely, by mobile light source or optical fiber they is aligned with each other.This device and single optical fiber more also are huge, are similar to above-mentioned endoscope, and it is confined to existing body cavity and relates to the diagnosis or the treatment on surface basically.In addition, it does not have selectivity, that is, all organizing is destroyed, no matter it is toxicity or healthy tissue.
Therefore, we need a kind of novel compact device, and it allows to distribute radiation at PDD in PDT and the PTT system, finish interactive treatment according to aptitude manner.A solution can be to utilize Model of Intelligent Mechanical Structures, can exchange between different patterns, thereby avoid the beam splitting of loss and allow auto-scaling.
A kind of mechanical conceptual that proposition addresses the above problem in PCT/SE02/02050 is wherein described the radiation distributor that two mutual rotating circular disks are arranged.Optical fiber between the radiation distributor couples different mode, it is by means of the relative motion of optical fiber in these two disks.In order to exchange the optical fiber that several light sources enter into patient, a kind of device that adds up to 4 disks is described.
Yet,, and solve the above problems though these frame for movements have had improvement to above-mentioned known IPDT system, but this mechanical solution has other limitation, for example, and the swap time in machinery inertial limit treatment and the diagnostic system between the different mode, for example, interactive therapy system.
Therefore, we need a kind of novel compact device, and its allows to distribute radiation in the system of treatment and diagnosis human body or animal, wherein treat and diagnosis comprises: PDT, PTT, and PDD.
The other problems that the present invention need solve provides another kind of scheme, the element that it does not need repairing and weares and teares, thus improve the reliability that is used for the treatment of with the diagnostic equipment, comprising: PDT, PTT, and PDD.In addition, should avoid the rotation of optical fiber, it can reduce device size and increased reliability.In addition, another problem that the present invention solves is, moves the sound or the noise of generation in the time of can reducing and eliminate known devices substantially and exchange between different operation modes.
Summary of the invention
A kind of system and method according to appended patent claims is provided, the present invention overcomes above-mentioned defective of the prior art and addresses the above problem at least, wherein by means of the system that requires minimum space, very actual and realize interactive IPDT effectively, it can according to integrated and simply mode finish and be used to diagnose the optical measurement different with measuration.Important application of the present invention is interactive interstitial photodynamic therapy and/or interactive photothermal oncotherapy.
Used term below in this description " radiation " is meant the radiation that is suitable for field of the present invention, that is, and and optical dynamic therapy (PDT) and/or photo-thermal therapy (PTT) and/or light power diagnosis (PDD).More particularly, this radiation is " light " radiation, that is, at infrared light (IR), the unionized formula electromagnetic radiation in visible light or the ultraviolet wavelength scope.This term also relates to the radiation source in the embodiment of the invention and claims scope, radiation conductor, and radiation sensor, radiation switch etc., that is, these " radiation " sources, conductor or pick off are suitable for producing, and the radiation of above-mentioned unionized formula is measured in guiding.
According to one aspect of the present invention, a kind ofly be used for the treatment of and/or diagnose the system of human body or animal to comprise: first radiation source of at least one emission diagnosing radiation, radiating second radiation source of at least one emitting treatment and at least one are suitable for guiding first radiation conductor that is radiated human body or animal position.This system comprises: the operator scheme selector installation is used for optical means and guides described treatment radiation or described diagnosing radiation to arrive described position by described at least one first radiation conductor.
According to embodiments of the invention, a kind of to be used for the treatment of and/or to diagnose the system of human body or animal be the system of interactive gap photodynamic tumor-treatment and/or photo-thermal oncotherapy and/or diagnosing tumor.
Utilization relatively has following advantage based on the on-mechanical formula exchange component and the mechanical device of optical principle.These advantages comprise: high exchange velocity between the different system operator scheme (diagnosis, optical dynamic therapy, thermal therapeutical); The compactness of system and reliability; Good optical parametric; The long service live of system, this is owing to do not have the mechanical wear and the more exchange cycles of element in the life cycle of system element; And do not exchange noise, thereby can increase patient's comfort level.
Description of drawings
In order to explain the present invention in more detail, below describe several embodiment of the present invention with reference to the accompanying drawings, wherein
Fig. 1 is the sketch map of the interactive IPDT embodiment of the present invention;
Fig. 2 is the sketch map of another embodiment of the present invention;
Fig. 3 is the sketch map of another embodiment of the present invention, and it comprises optical combiner and non-mechanical optical switch;
Fig. 4 is the sketch map of used optical combiner principle in the embodiment of the invention;
Fig. 5 is the sketch map of another embodiment of the present invention, and it comprises non-mechanical optical switch;
Fig. 6 is the sketch map of another embodiment of the present invention, and it includes the module in a plurality of diagnosing radiations source; With
Fig. 7 is the sketch map of another embodiment of the present invention, and it comprises 2 * N non-mechanical optical switch.
The specific embodiment
Referring now to the system of accompanying drawing description according to different embodiments of the invention.For the description of simplified embodiment, in all accompanying drawings, no longer repeat the reference number of like shown in the accompanying drawing.
Provide general description with reference to Fig. 1 according to first embodiment of the invention system 100.So interactive IPDT system 100 comprises a diagnosing radiation source 110 at least.Diagnosing radiation source 110 produces diagnosing radiation.Light radiation from least one diagnostic light radiation source 110 enters diagnostic light radiation coupling module 120.Light radiation is preferably transmitted by means of optical radiation conductors 111.In general, the radiation conductor of describing among this embodiment is a fiber waveguide, for example, and optical fiber.Diagnosing radiation coupling module 120 also is radiated at least one corresponding operator scheme by one or more radiation conductors 122 distribution and selects module 140.By means of diagnosing radiation coupling module 120, finish the coupling of diagnosing radiation and radiation conductor 122, for example, diagnosing radiation coupling module 120 comprises: non-mechanical optical switch, the placed in-line optical combiner of inclusive NAND mechanical optical switch or optical combiner.Below give detailed explanation.
As shown in Figure 1, diagnosing radiation also is directed into an operator scheme and selects module 140.It is that guiding is passed through the therapentic part 101 that a radiation conductor 142 arrives patients from the diagnosing radiation in a diagnosing radiation source 110 or from the treatment radiation of treatment radiation source 130 that each operator scheme is selected the function of module 140.All these radiation conductors 142 can transmit and be radiated reactive site 101 and receive radiation from described position.Therefore, can write down and read several measurement results simultaneously.Each optical fiber 142 is coupled to operator scheme separately contiguously selects module 140, for example, optical fiber 141 is coupled to operator scheme selects module 140, and it is that a plurality of operator schemes select first operator scheme in the module 140/ treatment radiation source 130 to select module 125 in Fig. 1.The far-end of optical fiber 142 correctly is placed on the diverse location of therapentic part, in order to diagnose or treat patient effectively.In addition, operator scheme selects module 140 couplings to turn back to operator scheme selection module 140 from the radiation of optical fiber 142 far-ends transmission, is transferred at least one radiation detector 150 again.Perhaps, utilize a plurality of radiation detectors, perhaps, they have different sensitivity, and perhaps, each operator scheme selects module that a detector is arranged.Radiation from into treatment sites 101 is transferred to radiation detector 150 by means of radiation conductor 152, wherein radiation conductor 151 be from shown in top layer operator scheme select module 140 to radiation detector 150.For example, operator scheme selects module 140 to comprise: non-mechanical optical switch or optical combiner.Describe in more detail based on the operator scheme of optical combiner with reference to Fig. 4 and to select module 140 embodiment.
Fig. 2 represents the interactive interstitial treatment system of another embodiment, and wherein diagnosing radiation coupling module 120 is divided into two radiation distribution element 210 and 220.Radiation distributor 210 is (N * 1) radiation distributor,, the radiation distributor of N radiation input and 1 radiation outfan is arranged that is.In this example, radiation distributor 210 is 3 * 1 radiation distributor, and its single outfan is coupled to that (1 * n) radiation distributor 220, wherein n is that operator scheme is selected the number of module 125 and radiation conductor 142 numbers that commute into treatment sites 101.Be similar to operator scheme and select module 140, radiation distributor 210,220 can comprise: for example, and non-mechanical optical switch or optical combiner.Followingly typical radiation distributor 210,220 is described in more detail with reference to Fig. 3 and 5, the various combination of its explanation non-mechanical optical switch, and/or radiation distributor 210,220 has the various advantages that relate to systematic function with the combiner of selecting module 140.
Fig. 3 represents such system, comprising: 3 * 1 optical combiners 310 and on-mechanical formula 1 * 6 photoswitch 320 and optical combiner 330 are as the operator scheme selector of 6 modules 325.For 6 treatments of interstitial treatment radiation source 130, preferably 6 of laser module treatment radiation sources 130 are coupled to 6 optical combiners 330.Each optical combiner 330 is worked by this way, and the treatment radiation coupling of therapeutic operation mode arrives therapentic part 101 by corresponding radiation conductor 142.In order to exchange to diagnostic operation mode, close the treatment radiation source, and activate a radiation source in 3 diagnosing radiation sources 110 subsequently.Therefore, diagnosing radiation is directed into combiner 310, wherein comes the radiation in self-activation diagnosing radiation source to be coupled to the outfan of combiner, and it is directed to non-mechanical optical switch 320.The radiation conductor that is radiated output 122 of non-mechanical optical switch 320 coupling inputs, it is directed to the corresponding optical combiner 330 that comprises a module 325.As shown in Figure 3, diagnosing radiation sends to therapentic part from the radiation conductor 142 of combiner 330 through being connected with combiner 330.Therefore, diagnosing radiation is expanded at therapentic part, and partly is transferred to all the other 5 radiation conductors 142, returns and partly be reflected.Diagnosing radiation from patient sends to radiation detector 150 through combiner 330.Therefore, obtain 5 (=n-1) measured values.Subsequently, non-mechanical optical switch 320 exchanges are arrived the next combiner 330 that next module 325 constitutes from the input diagnosing radiation of radiation source 110.Therefore, we obtain other 5 measured values.Repeat this measuring process,, thereby obtain 6 * 5 (=30) measured values until all 6 modules 325 of activation.These 30 measured values that obtain can be used as the FAULT MODEL input data of accumulating light dosage during therapeutic process in the tumor different piece.Utilize remaining diagnosing radiation source can repeat this measuring process, thereby produce 3 * 30 (N * (n-1)) or 90 tomography measured values.In addition, from the lighting radiation adapter purpose that 101 place's reflected diagnostic radiation can be used for diagnosing at the position.
Combiner 310 can be the commercialization optical fiber combination machine, for example, can buy from PolymicroTechnologies or Sedi Fibres Optiques.
As the basis of non-mechanical optical switch 320, we can utilize from the commercialization fiber switch of PiezosystemJena Inc or Agiltron Inc purchase.Fig. 4 represents the operation principle of combiner 330.Combiner 330 can also be based on the commercialization optical fiber combination machine of buying from Polymicro Technologies.This combiner has three input optical fibre 401-403, and wherein radiation is to transmit along direction shown in the arrow 421-423 of these optical fiber.Optical fiber 401-403 along length direction shown in the arrow 411 be drawn into single optical fiber or the knot 401,402,403 and 424 places be fused.Whole combiner is the length shown in the arrow 410.Therefore, light radiation is transferred to single optical fiber 400 through optical fiber 401 and 402, and mainly is transferred to optical fiber 403 along opposite direction from the radiation of single optical fiber 400.In the embodiment according to Fig. 3, optical fiber 401 is connected to the treatment radiation source, and optical fiber 402 is connected to the diagnosing radiation source, and optical fiber 403 is connected to radiation detector.Can make most of diagnosing radiation that combiner 330 transmission penetrates from tissue site 101 through optical fiber 400 to optical fiber 403, thereby guarantee effectively to utilize faint once in a while diagnosing radiation.This combiner directly is not radiated optical fiber 403 from optical fiber 401,402 transmission.
Fig. 5 is the sketch map of another embodiment of the present invention, and wherein non-mechanical optical switch 510 exchanges between different diagnosing radiation sources 110.Another non-mechanical optical switch 530 is as operator scheme selector work, wherein or the treatment radiation source be coupled to therapentic part, therapentic part is coupled in the diagnosing radiation source, or therapentic part is coupled to radiation detector.The operation class of non-mechanical optical switch 320 is similar to above description.The advantage of this embodiment is that the time that exchanges to another diagnosing radiation source from a diagnosing radiation source is not determined by the diagnosing radiation source.Compare with optical combiner, non-mechanical optical switch 510 is determined the time that the clearing house needs between the different radiation sources.This connects light source than closing light source at input of combiner at another input of combiner usually and has more repeatability, and wherein these two light sources are coupled to the identical outfan of combiner.In addition, non-mechanical optical switch has lower radiation loss than optical combiner usually, this means with optical combiner 310 to compare, and can utilize the diagnosing radiation source of lower-wattage.Yet non-mechanical optical switch must have the seedbed controlled, and optical combiner is a passive device.In addition, non-mechanical optical switch 530 can prevent that reflected diagnostic radiation from entering radiation detector 150 by combiner, for example, and combiner 330.This unintentional diagnosing radiation enters detector can cause the saturated of detector 150.Replacing a plurality of detectors 150 of use is for fear of this phenomenon, and single detector may be enough, can limit the cost according to the present embodiment system.
Fig. 6 is the sketch map of another embodiment of the present invention.The use of optical combiner 630 is similar to optical combiner 330.Comprise a plurality of diagnosing radiations source 610 in this embodiment, there is corresponding combiner 620 in each diagnosing radiation source in a plurality of diagnosing radiation source modules 615, replaces photoswitch and distributes diagnosing radiation to select module 140 to a plurality of operator schemes.Therefore, can save the expense of photoswitch, for example, photoswitch 320.In addition, diagnosing radiation source 610 can be modulated, therefore,, diagnosing radiation can be detected simultaneously by means of lock-in techniques or by multiplex signal.
Fig. 7 is the sketch map of another embodiment of the present invention.This embodiment comprises 2 * n photoswitch 710, and two diagnosis of its coupling input radiation source is to n outfan of switch 710.Switch 710 has two inputs, and it can at random be drawn towards different outfans.This element is a commodity elements, for example, can buy from Pyramid Optics.Operator scheme selector/treatment radiation source module is with reference to Fig. 5 the operation described mode selector module 525, but it also can utilize combiner modules 625 to replace.In this manner, can realize the solution of more compacting because in this system few element, for example, do not have combiner 310 or switch 510.As mentioned above, photoswitch has lower loss than combiner.
By means of any suitable method or device, comprising the dissimilar joints of optical fibre, for example, and SMA, ST or FC adapter, radiation conductor can be coupled or be connected to the different elements according to system of the present invention.Perhaps, utilize suitable method, for example, gluing or mechanical fixation, as the element of mounting spring, radiation conductor can be fixed in the perforate.
In order to calibrate according to system of the present invention, before the processing that the organize models of calibration is directly measured, for example, the model of making by aseptic refining lecithin aqueous solution or by Delrin
The aseptic solid-state model of making writes down the overall performance of this system.Utilize inside and/or external power meter, performance that can the monitor therapy radiation source.
Non-mechanical optical switch described above can be according to different principle work.Swap operation and beam deflection are based on the optical principle that does not have element to do mechanical movement, for example, and prism or reflecting mirror.The example of swap operation principle is the beam deflection that utilizes acousto-optic device or sound magnetic device, or utilizes automatically controlled material change of refractive, and wherein beam Propagation can make beam deflection arrive different output/input optical fibres by this material.The variable refractive index example of material that is applicable to electrooptical switching is LiNbO
3, LiTaO
3, GaAs, HgS, CdS, KDP, ADP, or SiO
2Agiltron
TMCompany provides such commercialization photoswitch, that is, and and CrystalLatch
TMSolid-state fiber-optical switch family or NanoSpeed
TMPhotoswitch series.The feature of these photoswitches is to respond fast and ultrahigh reliability, and it surpasses 1,000 hundred million exchange cycles.Agiltron
TMBe real on-mechanical formula (not having movable part) photoswitch, it is energized to realize the swap operation of state-of-the-art technology by means of the electric pulse of inorganic optical crystal inside.Swap operation is to utilize resisting temperature fluctuating and tired inherently stable mode to finish, and it provides another advantage of non-mechanical switches.In addition, the Agiltron switch has the fault secure locking ability, thereby can unrestrictedly keep their position after removing power supply.By means of DC low-voltage signal or digital form, can control this switch easily.
In following paragraph, we describe the ultimate principle that relates to according to system of the present invention, and description wherein is based on a kind of exemplary systems, and it has 3 diagnosing radiation sources 110 and 6 patient's radiation conductors 142, preferably optical fiber.
Under linguistic context of the present invention, reactive site or therapentic part are meant such position, wherein at the position that chemical reaction takes place in tumor the radiation time power radioactive compound of receiving treatment, the treatment radiation is that entry needle is placed in the tumor by the chamber of radiation conductor guiding by entry needle.So these radiation conductors 142 are fixed on reactive site 101.Then, mobile radiation conductor arrives the outside of entry needle far-end forward.During diagnosis and the comprehensive treatment of dosimetry, use identical radiation conductor 142 continuously, can avoid patient to accept repeatedly to puncture.
Preferably, diagnosing radiation source 110 is laser instrument and/or light emitting diode, and wherein laser instrument 130 has identical wavelength, is used for the laser irradiation of photodynamic tumor-treatment, but lower output can be arranged.Can arrange suitable filters to be inserted in the light path of radiation sensor 150, utilize suitable dynamic range, and prevent above the saturated of radiation detector of mentioning in order to ensure all measuring task.
Utilize some diagnosing radiation source 110 be for the radiation (light of above definition) of studying corresponding wavelength be how to penetrate by tumor tissues to arrive therapentic part 101.When entering when organizing by the particular radiation conductor through the said apparatus transmission from the radiation of radiation source, the function of a radiation conductor 142 is the emitters that enter tumor as transmission, and other 5 radiation conductors 142 in tumor are collected the diffusion radiation flux that arrives tumor as receptor.The radiation of collecting is directed into above-mentioned radiation sensor 150 again, can write down 5 different radiant intensity thereby list at detector array.
As the scheme different with specified wavelength, from the radiation of optics wideband light source, for example, white light source, and/or the radiation of broad-band illumination diode and/or line source can be coupled into specific active radiation conductor 142.Be organized on the path of receiver radiation conductor 142 in transmitting by patient, the absorption of tissue can change definite spectral distribution of radiation source.So oxygenated blood produces the signature different with non-oxygenated blood, thereby can utilize 30 different spectral distribution tomographies that are read out to determine oxygen distribution, in 6 possible different families, once obtain 5 spectrum.Oxygenation is important in this definite tumor, inserts oxygen in this tissue because PDT crosses range request.
At last, be under the situation of combiner selecting module 140, can be coupled to specific active radiation conductor 142 such as the visible light or the UV radiation source of laser.So, in this tissue, bring out fluorescence, and the antibody in the tissue of offeing medicine shows that the characteristic fluorescence to the longer wavelength displacement distributes.The level of antibody during the intensity of respective signal can quantize to organize approx.
Because short wavelength radiation has low-down tissue penetration ability, from the far-end that fluorescence can the local measurement radiation conductor that brings out of this radiation source.For this purpose, before detector 150, can insert wave filter to reduce 101 radiation reflected, because radiation reflected is higher than fluorescent radiation far away from the position.At Rev.Sci.Instr.71,510004 (2000) the middle suitable autonomous devices that are used for this purpose of describing.
By exchange diagnosing radiation source 110 orders by different module 125, at the most advanced and sophisticated proceeding measurement of 6 radiation conductors fluorescence as the antibody concentration specific function.Because antibody is by strong red treatment photobleaching, and treatment light to be radiated patient's radiation conductor 142 in guiding be strong especially around most advanced and sophisticated, this measurement is carried out when the treatment beginning.
In addition, if the tip of radiation conductor 142 is to utilize a kind of like this material to handle, its photoluminescent property is that temperature is relevant, then obtains sharp-pointed fluorescent line after excitation, and the intensity of these spectral lines and their relative intensity depend on the temperature at treatment usefulness radiation conductor 142 tips.This examples of material is the salt of transition metal or rare earth metal.Therefore, also can be in 6 position measurement temperature of 6 radiation conductors, one of one-shot measurement or measurement simultaneously.The temperature that utilization records can be found out the hemopexis whether the relative photo decay is arranged at the tip of radiation conductor 142, and studies the utilization of possibility cooperative effect between relevant PDT and the thermal interaction.Because the spectral line that obtains is sharp-pointed, can easily in the broadband of this tissue, gives birth to and extract these spectral lines the fluorescence distribution.
Can utilize other method to measure the antibody horizontal of some material.Then, the HONGGUANG that is used for light propagation research can be brought out red fluorescence or near-infrared fluorescent.This fluorescence penetrate tissue arrives the tip of receiver radiation conductor 142, and is shown the spectrum that obtains as in the radiation sensor 150 simultaneously.Based on obtaining ading up to 30 measured values in each measurement, distribution that can the tomography calculating antibody.
After finishing diagnostic measures and calculating, can utilize the optical fiber that couples light to patient to treat, wherein close the diagnosing radiation source and connect treatment radiation source 130, and the photoswitch that exists in the exchange system, therefore, the treatment radiation source is coupled to patient's optical fiber 142.The treatment radiation source is lasing light emitter preferably, wavelength of choosing and the absorption band of antibody coupling.When photodynamic tumor-treatment, preferably use dye laser or diode laser, the wavelength of choosing is the wavelength that antibody uses.For example, Photofrin
Wavelength be 630nm; The wavelength of δ amino-laevulic acid (ALA) is 635nm; And the wavelength of phthalocyanine is about 670nm, and several other antibody have this characteristic wavelength.During treating, adjust each laser instrument to separately desirable output.If desired, they can have inside or external monitoring detector.
In interactive approach, can therapy discontinued handle, and can handle new diagnostic data, until reaching best treatment.This method can comprise working in coordination with between PDT and the hyperpyrexia, wherein is issued to the temperature of increase in the condition that increases the laser emission flux.Utilize the whole process of computer control, it not only can finish whole calculating, but also is used for the adjustment and the control of system.
More than describing the present invention is with reference to several specific embodiments.Yet within the scope of the appended claims, other embodiment that are not used in above preferred embodiment also are possible, for example, utilize and above-mentioned different optical coupler element, realize above method by means of hardware or software, or the like.
In addition, the term that uses in this description " comprises " element or the step of not getting rid of other, and term " " is not got rid of a plurality of, and the function of plurality of units described in claims or circuit can be finished in single processor or other unit.
Claims (24)
1. one kind is used for the interactive system for the treatment of and/or diagnosing human body or animal, comprise: first radiation source of at least one emission diagnosing radiation, radiating second radiation source of at least one emitting treatment, be suitable for guiding first radiation conductor that is radiated human body or animal tumor position with at least one, it is characterized in that, at least one on-mechanical operator scheme selector installation, be used for described treatment radiation of optical guidance or described diagnosing radiation and arrive described position by described at least one first radiation conductor, wherein said radiation is non-ionization type electromagnetic radiation.
2. according to the system of claim 1, it is characterized in that described at least one first radiation conductor also is suitable for being radiated at least one radiation detector from described part guidance.
3. according to the system of claim 2, it is characterized in that, described at least one first radiation conductor has a far-end, wherein said far-end is placed on described tumor locus, wherein at least one first radiation conductor is as emitter and/or receptor, be used to guide radiation from described at least one radiation source to arrive tumor locus and/or guiding, be used for diagnosis and/or treatment from the radiation of tumor locus.
4. according to the system of claim 1 to 3, it is characterized in that, described operator scheme selector installation is connected to described diagnosing radiation source, described treatment radiation source, described radiation conductor and described radiation detector, therefore, treatment radiation or diagnosing radiation are transmitted into described tumor locus in use, or the diagnosing radiation of launching identical and/or another radiation conductor by described first radiation conductor in use is received and is transmitted into described radiation detector by described radiation conductor.
5. according to the system of claim 1 to 4, it is characterized in that described operator scheme selector installation is a non-mechanical optical switch.
6. according to the system of claim 5, it is characterized in that described non-mechanical optical switch is based on the electrooptical switching that electric control refractive index changes.
7. according to the system of claim 5, it is characterized in that described non-mechanical optical switch is based on the acoustooptic switch that sound produces Bragg deflection.
8. according to the system of claim 5, it is characterized in that described non-mechanical optical switch is a magneto-optic shutter.
9. according to the system of claim 1 to 4, it is characterized in that described operator scheme selector installation is an optical combiner.
10. according to the system of claim 4 to 9, it is characterized in that, a plurality of described first radiation conductors, a described operator scheme selector installation is coupled in wherein a plurality of described diagnosing radiations source, be used for being transferred to described position from described diagnosing radiation source, and remaining operator scheme selector installation is coupled into the emission diagnosing radiation to described at least one radiation detector, is wherein stopped by described operator scheme selector installation from the radiating radiation of described treatment and can not be transferred to described position.
11. the system according to claim 10 is characterized in that, it is by means of being selected from following device that a described operator scheme selector installation is coupled in an activation diagnosing radiation source, comprise: optical combiner, non-mechanical optical switch, two non-mechanical optical switch and 2 * N non-mechanical optical switch.
12. system according to claim 4 to 9, it is characterized in that, each operator scheme selector installation has identical a plurality of diagnosing radiations source, they are coupled to each described operator scheme selector installation, be used to be transferred to described position, wherein in use only diagnosing radiation source be simultaneously activated, or the described operator scheme selector installation diagnosis light source that is configured to only once be coupled is used to transmit described diagnosing radiation to described position.
13. the system according to claim 12 is characterized in that, each described operator scheme selector is coupled to by means of optical combiner in identical a plurality of diagnosing radiations source.
14. the system according to claim 4 to 9 is characterized in that, a treatment radiation source is coupled to each described operator scheme selector, is used to transmit described treatment radiation and arrives described position by each described radiation conductor, and wherein the diagnosing radiation source is nonactivated.
15., it is characterized in that described radiation source is infrared light (IR), the light source of visible light or ultraviolet light according to any one system in the above claim.
16. the system according to claim 15 is characterized in that, utilizes the temperature-sensitive fluorescent emissive materials to handle second end of radiation conductor.
17., it is characterized in that described radiation source is the coherent source and/or the light emitting diode of single fixed wave length according to any one system in the claim 1 to 16.
18., it is characterized in that described radiation conductor is an optical fiber according to any one system in the above claim.
19. the system according to claim 15-17 is characterized in that, arrives the fluorescence at this position as the emission diagnosing radiation by the fluorescence of same light conductor record.
20. the system according to claim 19 is characterized in that,
When the interactive optical dynamic therapy, the one or more radiation conductors that utilize the temperature-sensitive fluorescent emissive materials to handle are configured to measure the temperature at this position,
Send to the radiation heating therapentic part at this position during use,
The radiant intensity that sends during use is recorded temperature controlling, in order that adjust the temperature of this position at each radiation conductor place.
Temperature.
21., it is characterized in that described interactive treatment and diagnosis comprise the selectable following operator scheme of described operator scheme selector installation according to any one system in the above claim:
Interactive gap light power tumor therapy utilizes pyritous photo-thermal tumor therapy, and diagnosing tumor, wherein under the same case of the described tumor locus of treatment, alternately uses these operator schemes.
22. method that is used for interactive gap photodynamic tumor-treatment and/or photo-thermal oncotherapy and/or diagnosing tumor, wherein at least one radiation detector and radiation conductor are connected to tumor locus, and radiation conductor is as emitter and/or receptor, be used to guide radiation to commute tumor locus, the tumor of diagnosis and treatment tumor locus
It is characterized in that,
By means of according at least one on-mechanical operator scheme selector installation in any one system in the claim 1 to 21, by the exchange between diagnosing radiation and the treatment radiation, can automatically realize between oncotherapy and the diagnosing tumor exchange and
By adjusting the treatment radiant intensity relevant with diagnostic result, the result of diagnosis controls therapeutic process, until the optimal treatment of realizing tumor locus.
23. the method according to claim 22 is characterized in that, under the same case of the described tumor locus of treatment, alternately utilizes interactive gap light power tumor therapy, utilizes pyritous photo-thermal tumor therapy, and diagnosing tumor.
24., utilize non-mechanical optical switch and/or optical combiner according to any one is used for the system of interactive treatment and/or diagnosis human body or animal in the claim 1 to 21.
Applications Claiming Priority (6)
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| SE0301410A SE527164C2 (en) | 2003-05-14 | 2003-05-14 | Interactive therapy/diagnosis system for tumor, has operation mode selector to optically direct non-ionizing electromagnetic therapeutic and/or diagnostic radiation to tumor site, through radiation conductor |
| US47085403P | 2003-05-16 | 2003-05-16 | |
| US60/470,854 | 2003-05-16 | ||
| PCT/SE2004/000756 WO2004100789A1 (en) | 2003-05-14 | 2004-05-14 | System and method for therapy and diagnosis comprising optical components for distribution of radiation |
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| CN1787778B CN1787778B (en) | 2011-01-12 |
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| CN103189106A (en) * | 2010-09-07 | 2013-07-03 | 施泰巴马奥尔股份公司 | Modelling of the action of an optical fibre in photodynamic therapy treatment, and assistance in the planning of said treatment |
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| AU2004238182A1 (en) | 2004-11-25 |
| JP2006528904A (en) | 2006-12-28 |
| SE0301410L (en) | 2005-01-13 |
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| SE527164C2 (en) | 2006-01-10 |
| ES2399752T3 (en) | 2013-04-03 |
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